Masons Insul-Baffle is a crenelated semi-rigid synthetic spacer. Made from clear plastic. It is installed over the rafters or truss top chords, typically near the eaves, where it is likely bulk thermal insulation may push up against the roof underlay.

Details
  • Category
    Rigid Air Barriers
  • Range
    Masons Roofing Systems and Products
Specifications
  • Insul-Baffle separator - 2 pack box
  • 45mm x 650mm x 6Lm
Scope of use

Preserves an air gap. Typically used to ensure roof insulation is separated from bulk insulation where the roof underlay and insulation may be pressed together near the eaves.

Contributes to air flow. When used as part of a passive roof space ventilation design.

Suitable to be used in long run or metal tile clad truss framed pitched roofs, either timber or light steel framed.  It may be used in new roof or re-roof installations with either trusses or rafters.

Not suitable for use in Skillion roofs, these require different design solutions.

Features

Key Benefits:

Masons Insul-Baffle is designed to separate roof underlay from bulk insulation where these elements may come into contact, or the required 25mm gap between them cannot be maintained. It assists in meeting the requirements of NZS 4246:2016.6.2.10. 

It also allows a path for air movement as part of a passive–stack ventilated roof space design. Masons Insul-Baffle incorporates ‘Dragon Channels’ to increase rigidity and aid air to cross flow. 

Open Area:

A minimum 25mm air gap between insulation and the roof underlay is required, this equates to an open area of 25,000m㎡ per Lm.  Masons Insul-Baffle exhibits an open area of circa 32,000m㎡ per Lm.  Allowing for possible variations during installation, reducing open area due to bulk insulation intrusion, truss chord blocking air channel, or deformation of crenelations an open area of 25,600m㎡ is realistic.

Recyclability

Clear plastic is recyclable. Masons recommend contacting the local council or waste stream recycling providers in your locality for advice on who can accept clean, dry, fixing free Masons Insul-Baffle for recycling.

Storage

Store in cool dry conditions in original cardboard boxes until installation.

Warranty

15 years, installed per instructions, durability is expected to be for the life of the roof cladding or roof underlay.

For enquiries, complete the contact form below or call us on 0800 522 533.
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About the
Seller

We’re Masons – a New Zealand owned family business that’s been part of the building industry for more than 25 years. We develop products and systems that help buildings, and the people that make them, perform at their best.

Masons was built from practical experience. Trent Mason learned the trade in a bricklaying family, where doing the job properly mattered. When he moved to New Zealand at the age of 19, he brought that same mindset to the building site – always looking for better products and systems to make the job easier for the people around him.

That approach still motivates us. We focus on the complete building envelope and how each component interacts with the next. Wraps, air barriers, fixings, tapes, cladding elements – everything works better when it works as a system. Our goal is to reduce risk and remove guesswork so buildings perform the way they should.

Over the years we’ve become known as trusted problem-solvers – the people you call when you want something explained clearly, when you need to understand how components connect, or simply want confidence you’re making the right call.

We’re here to help make building smarter, simpler and more reliable – with great products, great systems and great people.

Masons. Delivering products and systems to build smarter.

Masons